How-to fix 0x80072F8F A security error occurred.

How-to fix 0x80072F8F A security error occurred.

0x80072F8F is a very common error when attempting to activate Windows. The cause for the error “a security error occurred” is plain simple: the time on your system does not match the time on the activation servers” thus they block your access.

Troubleshooting method 1

This method is for users with a Windows desktop mode, if you’re running Windows RT then skip to Troubleshooting Method 2.

Right-click the clock in the right bottom corner of your screen.

Click on Adjust Time and Date

Adjust Time and Date, Taskbar

Click on Change Time and Date

Correct the Time and Date

Now continue reading: Activating Windows.

Troubleshooting method 2

If you’re running Windows RT or you just love the Start Interface then you should execute these steps to change the time and date on your system

Within the start main screen, type “Date and Time”

Choose “Change time and date settings”

Change time and date settings

If the settings are set to automatically then disable this, then correct the time and date

Now continue reading: Activating Windows.

Activating Windows

You’ve now corrected the time and date on your system, and you should be able to activate your system.

Open Start

Type “slui.exe”

Enter your product key and follow the steps on the screen.

Windows should now activate successfully, if it does not then please feel free to comment.

2014, 2015 & 2016 Microsoft Most Valuable Professional Windows
Yuri specializes in troubleshooting (crash analysis and devices), system resource utilisation and system performance. He is also very interested in Customer Security. Yuri can be found as Windows Community Moderator and Wiki Author on Microsoft Answers and is active on different communities all across the web.

WindowsInstructed has been founded as a Windows solutions website for the most common Windows issues that users are experiencing while using their system. We index many online communities and look for a pattern of problems. When we find a pattern we will ask one of our experts in that expertise to write a Troubleshooting guide for the problem.